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Operating Manual VRC 430 0020042468_024
Appliance features
Application
The VRC 430 is a weather compensator controller for
heating and generating hot water.
"Weather compensator" means: at low external tem-
peratures the VRC 430 provides more heating output,
and at higher external temperatures lower heating
output. The outside temperature is measured by a
separate outdoor sensor, and the results are transmit-
ted to the VRC 430.
The room temperature is based only on your preset
values. The system compensates for the effect of the
external temperature.
You can use the VRC 430 to set different room target
temperatures - for different times of the day and for dif-
ferent days of the week.
In automatic mode, the VRC 430 controls your heating
according to these settings (see Fig. 0.1).
With the VRT 430 you can also control times for heating
and hot water generation.
04:00 16:0008:00 12:00
20:00
15 °
20 °
25 °
Room temperature
Time
Set back temperature
Period 1 Period 3Period 2
Fig. 0.1 Automatic heating operation: Example, setting the tar-
get room temperature for different times of day
The VRC 430 can also be used to control the following
accessory components:
Circulation pump for hot water generation in conjunc-
tion with a multi-functional module 2 of 7
Conventional domestic hot water cylinder
Vaillant layer hot water storage tank actoSTOR
Second heating circuit using the Vaillant Mixer
Module VR 61
Solar unit using the Vaillant Solar Module VR 68
The VRC 430 can be operated with the Vaillant remote
control VR 81.
The VRC 430 can form part of a new heating and hot
water generation unit or can also be retro-fitted into an
existing installation. The heating unit must have an
eBUS interface.
eBUS is a communications standard for data exchange
between heating technology components.
Product features
– eBUS interface
Data connection with a Vaillant heating unit via an
eBUS line
Illuminated graphical display (display field)
Operation via both dials according to the Vaillant
"turn and click" principle
Direct fitting of the controller in the operating panel
of the heating unit or separate wall mounting
Equipped for operation with Vaillant diagnostics soft-
ware vrDIALOG 810/2 and with the Vaillant Internet
Communication System vrnetDIALOG, i.e. Remote di-
agnosis and settings
Appliance features
4


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